If you want the game to feel a little more like the first edition, we recommend that you play with at least the first two variants here.
If you would like the citizen placement to feel tighter, use this rules:
If a player places a citizen on an action space that already has a citizen with a higher skill number, the player must pay coins equal to the difference in skill (instead of the normal one coin).
If the player cannot pay coins, then they cannot place their citizen there. …